US 9,438,187 B2Granted

Amplifying device, transmitting device

AssigneeKabushiki Kaisha Toshiba

InventorsAtsushi Yamaoka, Keiichi Yamaguchi

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Abstract

An amplifying device of an embodiment includes: a first amplifier amplifying a first component of an input signal; a first output circuit having an input connected to an output of the first amplifier and converting impedance seen from an output of the first output circuit to make the converted impedance seen from the first amplifier; a second amplifier amplifying a second component of the input signal with a bias deeper than that of the first amplifier; a second output circuit having an input connected to an output of the second amplifier, having a longer electrical length than that of the first output circuit part, and converting impedance seen from an output of the second output circuit to make the converted impedance seen from the second amplifier; and a combiner combining the first component amplified by the first amplifier and the second component amplified by the second amplifier.

Claims18

Dependent claims

An amplifying device comprising:

a first amplifier to amplify a first signal component of an input signal;
a first output circuit having an input connected to an output of the first amplifier, the first output circuit converting an impedance seen from an output of the first output circuit so as to make the converted impedance seen from the first amplifier;
a second amplifier to amplify a second signal component of the input signal with a bias deeper than a bias of the first amplifier;
a second output circuit having an input connected to an output of the second amplifier, the second output circuit having a longer electrical length than an electric length of the first output circuit, the second output circuit converting an impedance seen from an output of the second output circuit so as to make the converted impedance seen from the second amplifier;
a combiner to combine the first signal component amplified by the first amplifier and the second signal component amplified by the second amplifier, and
an operation controller to switch operating classes of the first amplifier and the second amplifier according to a frequency of the input signal.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/328,140Filed 10 Jul 2014
Priority: JP 2013-14569511 Jul 2013
Published: US 2015/0017934 A115 Jan 2015
Granted: 6 Sep 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

H03F 3/245
Of transmitter output stages: with semiconductor devices only
H03F 1/0261
In transistor amplifiers: with control of the polarisation voltage or current, e.g. gliding Class A
H03F 1/0288
In transistor amplifiers: using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using…
H04B 1/0458
Circuits: arrangements for matching and coupling between power amplifier and antenna or between amplifying stages

Family

US 2015/0017934 A1Pre-grant publication · published 15 Jan 2015
US 9,438,187 B2This patent

From the US filing history. Foreign family members aren’t listed.

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